summaryrefslogtreecommitdiff
diff options
context:
space:
mode:
-rw-r--r--include/llvm/IR/IntrinsicsNVVM.td130
-rw-r--r--lib/Target/NVPTX/NVPTXIntrinsics.td39
-rw-r--r--lib/Target/NVPTX/NVPTXRegisterInfo.td7
-rw-r--r--test/CodeGen/NVPTX/envreg.ll139
4 files changed, 314 insertions, 1 deletions
diff --git a/include/llvm/IR/IntrinsicsNVVM.td b/include/llvm/IR/IntrinsicsNVVM.td
index 26dc70acfd..f7b5b3307a 100644
--- a/include/llvm/IR/IntrinsicsNVVM.td
+++ b/include/llvm/IR/IntrinsicsNVVM.td
@@ -889,6 +889,136 @@ def int_nvvm_compiler_error :
def int_nvvm_compiler_warn :
Intrinsic<[], [llvm_anyptr_ty], [], "llvm.nvvm.compiler.warn">;
+// Environment register read
+def int_nvvm_read_ptx_sreg_envreg0
+ : Intrinsic<[llvm_i32_ty], [], [IntrNoMem],
+ "llvm.nvvm.read.ptx.sreg.envreg0">,
+ GCCBuiltin<"__nvvm_read_ptx_sreg_envreg0">;
+def int_nvvm_read_ptx_sreg_envreg1
+ : Intrinsic<[llvm_i32_ty], [], [IntrNoMem],
+ "llvm.nvvm.read.ptx.sreg.envreg1">,
+ GCCBuiltin<"__nvvm_read_ptx_sreg_envreg1">;
+def int_nvvm_read_ptx_sreg_envreg2
+ : Intrinsic<[llvm_i32_ty], [], [IntrNoMem],
+ "llvm.nvvm.read.ptx.sreg.envreg2">,
+ GCCBuiltin<"__nvvm_read_ptx_sreg_envreg2">;
+def int_nvvm_read_ptx_sreg_envreg3
+ : Intrinsic<[llvm_i32_ty], [], [IntrNoMem],
+ "llvm.nvvm.read.ptx.sreg.envreg3">,
+ GCCBuiltin<"__nvvm_read_ptx_sreg_envreg3">;
+def int_nvvm_read_ptx_sreg_envreg4
+ : Intrinsic<[llvm_i32_ty], [], [IntrNoMem],
+ "llvm.nvvm.read.ptx.sreg.envreg4">,
+ GCCBuiltin<"__nvvm_read_ptx_sreg_envreg4">;
+def int_nvvm_read_ptx_sreg_envreg5
+ : Intrinsic<[llvm_i32_ty], [], [IntrNoMem],
+ "llvm.nvvm.read.ptx.sreg.envreg5">,
+ GCCBuiltin<"__nvvm_read_ptx_sreg_envreg5">;
+def int_nvvm_read_ptx_sreg_envreg6
+ : Intrinsic<[llvm_i32_ty], [], [IntrNoMem],
+ "llvm.nvvm.read.ptx.sreg.envreg6">,
+ GCCBuiltin<"__nvvm_read_ptx_sreg_envreg6">;
+def int_nvvm_read_ptx_sreg_envreg7
+ : Intrinsic<[llvm_i32_ty], [], [IntrNoMem],
+ "llvm.nvvm.read.ptx.sreg.envreg7">,
+ GCCBuiltin<"__nvvm_read_ptx_sreg_envreg7">;
+def int_nvvm_read_ptx_sreg_envreg8
+ : Intrinsic<[llvm_i32_ty], [], [IntrNoMem],
+ "llvm.nvvm.read.ptx.sreg.envreg8">,
+ GCCBuiltin<"__nvvm_read_ptx_sreg_envreg8">;
+def int_nvvm_read_ptx_sreg_envreg9
+ : Intrinsic<[llvm_i32_ty], [], [IntrNoMem],
+ "llvm.nvvm.read.ptx.sreg.envreg9">,
+ GCCBuiltin<"__nvvm_read_ptx_sreg_envreg9">;
+def int_nvvm_read_ptx_sreg_envreg10
+ : Intrinsic<[llvm_i32_ty], [], [IntrNoMem],
+ "llvm.nvvm.read.ptx.sreg.envreg10">,
+ GCCBuiltin<"__nvvm_read_ptx_sreg_envreg10">;
+def int_nvvm_read_ptx_sreg_envreg11
+ : Intrinsic<[llvm_i32_ty], [], [IntrNoMem],
+ "llvm.nvvm.read.ptx.sreg.envreg11">,
+ GCCBuiltin<"__nvvm_read_ptx_sreg_envreg11">;
+def int_nvvm_read_ptx_sreg_envreg12
+ : Intrinsic<[llvm_i32_ty], [], [IntrNoMem],
+ "llvm.nvvm.read.ptx.sreg.envreg12">,
+ GCCBuiltin<"__nvvm_read_ptx_sreg_envreg12">;
+def int_nvvm_read_ptx_sreg_envreg13
+ : Intrinsic<[llvm_i32_ty], [], [IntrNoMem],
+ "llvm.nvvm.read.ptx.sreg.envreg13">,
+ GCCBuiltin<"__nvvm_read_ptx_sreg_envreg13">;
+def int_nvvm_read_ptx_sreg_envreg14
+ : Intrinsic<[llvm_i32_ty], [], [IntrNoMem],
+ "llvm.nvvm.read.ptx.sreg.envreg14">,
+ GCCBuiltin<"__nvvm_read_ptx_sreg_envreg14">;
+def int_nvvm_read_ptx_sreg_envreg15
+ : Intrinsic<[llvm_i32_ty], [], [IntrNoMem],
+ "llvm.nvvm.read.ptx.sreg.envreg15">,
+ GCCBuiltin<"__nvvm_read_ptx_sreg_envreg15">;
+def int_nvvm_read_ptx_sreg_envreg16
+ : Intrinsic<[llvm_i32_ty], [], [IntrNoMem],
+ "llvm.nvvm.read.ptx.sreg.envreg16">,
+ GCCBuiltin<"__nvvm_read_ptx_sreg_envreg16">;
+def int_nvvm_read_ptx_sreg_envreg17
+ : Intrinsic<[llvm_i32_ty], [], [IntrNoMem],
+ "llvm.nvvm.read.ptx.sreg.envreg17">,
+ GCCBuiltin<"__nvvm_read_ptx_sreg_envreg17">;
+def int_nvvm_read_ptx_sreg_envreg18
+ : Intrinsic<[llvm_i32_ty], [], [IntrNoMem],
+ "llvm.nvvm.read.ptx.sreg.envreg18">,
+ GCCBuiltin<"__nvvm_read_ptx_sreg_envreg18">;
+def int_nvvm_read_ptx_sreg_envreg19
+ : Intrinsic<[llvm_i32_ty], [], [IntrNoMem],
+ "llvm.nvvm.read.ptx.sreg.envreg19">,
+ GCCBuiltin<"__nvvm_read_ptx_sreg_envreg19">;
+def int_nvvm_read_ptx_sreg_envreg20
+ : Intrinsic<[llvm_i32_ty], [], [IntrNoMem],
+ "llvm.nvvm.read.ptx.sreg.envreg20">,
+ GCCBuiltin<"__nvvm_read_ptx_sreg_envreg20">;
+def int_nvvm_read_ptx_sreg_envreg21
+ : Intrinsic<[llvm_i32_ty], [], [IntrNoMem],
+ "llvm.nvvm.read.ptx.sreg.envreg21">,
+ GCCBuiltin<"__nvvm_read_ptx_sreg_envreg21">;
+def int_nvvm_read_ptx_sreg_envreg22
+ : Intrinsic<[llvm_i32_ty], [], [IntrNoMem],
+ "llvm.nvvm.read.ptx.sreg.envreg22">,
+ GCCBuiltin<"__nvvm_read_ptx_sreg_envreg22">;
+def int_nvvm_read_ptx_sreg_envreg23
+ : Intrinsic<[llvm_i32_ty], [], [IntrNoMem],
+ "llvm.nvvm.read.ptx.sreg.envreg23">,
+ GCCBuiltin<"__nvvm_read_ptx_sreg_envreg23">;
+def int_nvvm_read_ptx_sreg_envreg24
+ : Intrinsic<[llvm_i32_ty], [], [IntrNoMem],
+ "llvm.nvvm.read.ptx.sreg.envreg24">,
+ GCCBuiltin<"__nvvm_read_ptx_sreg_envreg24">;
+def int_nvvm_read_ptx_sreg_envreg25
+ : Intrinsic<[llvm_i32_ty], [], [IntrNoMem],
+ "llvm.nvvm.read.ptx.sreg.envreg25">,
+ GCCBuiltin<"__nvvm_read_ptx_sreg_envreg25">;
+def int_nvvm_read_ptx_sreg_envreg26
+ : Intrinsic<[llvm_i32_ty], [], [IntrNoMem],
+ "llvm.nvvm.read.ptx.sreg.envreg26">,
+ GCCBuiltin<"__nvvm_read_ptx_sreg_envreg26">;
+def int_nvvm_read_ptx_sreg_envreg27
+ : Intrinsic<[llvm_i32_ty], [], [IntrNoMem],
+ "llvm.nvvm.read.ptx.sreg.envreg27">,
+ GCCBuiltin<"__nvvm_read_ptx_sreg_envreg27">;
+def int_nvvm_read_ptx_sreg_envreg28
+ : Intrinsic<[llvm_i32_ty], [], [IntrNoMem],
+ "llvm.nvvm.read.ptx.sreg.envreg28">,
+ GCCBuiltin<"__nvvm_read_ptx_sreg_envreg28">;
+def int_nvvm_read_ptx_sreg_envreg29
+ : Intrinsic<[llvm_i32_ty], [], [IntrNoMem],
+ "llvm.nvvm.read.ptx.sreg.envreg29">,
+ GCCBuiltin<"__nvvm_read_ptx_sreg_envreg29">;
+def int_nvvm_read_ptx_sreg_envreg30
+ : Intrinsic<[llvm_i32_ty], [], [IntrNoMem],
+ "llvm.nvvm.read.ptx.sreg.envreg30">,
+ GCCBuiltin<"__nvvm_read_ptx_sreg_envreg30">;
+def int_nvvm_read_ptx_sreg_envreg31
+ : Intrinsic<[llvm_i32_ty], [], [IntrNoMem],
+ "llvm.nvvm.read.ptx.sreg.envreg31">,
+ GCCBuiltin<"__nvvm_read_ptx_sreg_envreg31">;
+
// Texture Fetch
def int_nvvm_tex_1d_v4f32_i32
diff --git a/lib/Target/NVPTX/NVPTXIntrinsics.td b/lib/Target/NVPTX/NVPTXIntrinsics.td
index 5e228fc396..5933e2dfc6 100644
--- a/lib/Target/NVPTX/NVPTXIntrinsics.td
+++ b/lib/Target/NVPTX/NVPTXIntrinsics.td
@@ -1689,6 +1689,45 @@ def INT_NVVM_COMPILER_ERROR_64 : NVPTXInst<(outs), (ins Int64Regs:$a),
[(int_nvvm_compiler_error Int64Regs:$a)]>;
+// Special register reads
+def MOV_SPECIAL : NVPTXInst<(outs Int32Regs:$d),
+ (ins SpecialRegs:$r),
+ "mov.b32\t$d, $r;", []>;
+
+def : Pat<(int_nvvm_read_ptx_sreg_envreg0), (MOV_SPECIAL ENVREG0)>;
+def : Pat<(int_nvvm_read_ptx_sreg_envreg1), (MOV_SPECIAL ENVREG1)>;
+def : Pat<(int_nvvm_read_ptx_sreg_envreg2), (MOV_SPECIAL ENVREG2)>;
+def : Pat<(int_nvvm_read_ptx_sreg_envreg3), (MOV_SPECIAL ENVREG3)>;
+def : Pat<(int_nvvm_read_ptx_sreg_envreg4), (MOV_SPECIAL ENVREG4)>;
+def : Pat<(int_nvvm_read_ptx_sreg_envreg5), (MOV_SPECIAL ENVREG5)>;
+def : Pat<(int_nvvm_read_ptx_sreg_envreg6), (MOV_SPECIAL ENVREG6)>;
+def : Pat<(int_nvvm_read_ptx_sreg_envreg7), (MOV_SPECIAL ENVREG7)>;
+def : Pat<(int_nvvm_read_ptx_sreg_envreg8), (MOV_SPECIAL ENVREG8)>;
+def : Pat<(int_nvvm_read_ptx_sreg_envreg9), (MOV_SPECIAL ENVREG9)>;
+def : Pat<(int_nvvm_read_ptx_sreg_envreg10), (MOV_SPECIAL ENVREG10)>;
+def : Pat<(int_nvvm_read_ptx_sreg_envreg11), (MOV_SPECIAL ENVREG11)>;
+def : Pat<(int_nvvm_read_ptx_sreg_envreg12), (MOV_SPECIAL ENVREG12)>;
+def : Pat<(int_nvvm_read_ptx_sreg_envreg13), (MOV_SPECIAL ENVREG13)>;
+def : Pat<(int_nvvm_read_ptx_sreg_envreg14), (MOV_SPECIAL ENVREG14)>;
+def : Pat<(int_nvvm_read_ptx_sreg_envreg15), (MOV_SPECIAL ENVREG15)>;
+def : Pat<(int_nvvm_read_ptx_sreg_envreg16), (MOV_SPECIAL ENVREG16)>;
+def : Pat<(int_nvvm_read_ptx_sreg_envreg17), (MOV_SPECIAL ENVREG17)>;
+def : Pat<(int_nvvm_read_ptx_sreg_envreg18), (MOV_SPECIAL ENVREG18)>;
+def : Pat<(int_nvvm_read_ptx_sreg_envreg19), (MOV_SPECIAL ENVREG19)>;
+def : Pat<(int_nvvm_read_ptx_sreg_envreg20), (MOV_SPECIAL ENVREG20)>;
+def : Pat<(int_nvvm_read_ptx_sreg_envreg21), (MOV_SPECIAL ENVREG21)>;
+def : Pat<(int_nvvm_read_ptx_sreg_envreg22), (MOV_SPECIAL ENVREG22)>;
+def : Pat<(int_nvvm_read_ptx_sreg_envreg23), (MOV_SPECIAL ENVREG23)>;
+def : Pat<(int_nvvm_read_ptx_sreg_envreg24), (MOV_SPECIAL ENVREG24)>;
+def : Pat<(int_nvvm_read_ptx_sreg_envreg25), (MOV_SPECIAL ENVREG25)>;
+def : Pat<(int_nvvm_read_ptx_sreg_envreg26), (MOV_SPECIAL ENVREG26)>;
+def : Pat<(int_nvvm_read_ptx_sreg_envreg27), (MOV_SPECIAL ENVREG27)>;
+def : Pat<(int_nvvm_read_ptx_sreg_envreg28), (MOV_SPECIAL ENVREG28)>;
+def : Pat<(int_nvvm_read_ptx_sreg_envreg29), (MOV_SPECIAL ENVREG29)>;
+def : Pat<(int_nvvm_read_ptx_sreg_envreg30), (MOV_SPECIAL ENVREG30)>;
+def : Pat<(int_nvvm_read_ptx_sreg_envreg31), (MOV_SPECIAL ENVREG31)>;
+
+
//-----------------------------------
// Texture Intrinsics
//-----------------------------------
diff --git a/lib/Target/NVPTX/NVPTXRegisterInfo.td b/lib/Target/NVPTX/NVPTXRegisterInfo.td
index 7a38a66b92..3482248948 100644
--- a/lib/Target/NVPTX/NVPTXRegisterInfo.td
+++ b/lib/Target/NVPTX/NVPTXRegisterInfo.td
@@ -46,6 +46,10 @@ foreach i = 0-4 in {
def da#i : NVPTXReg<"%da"#i>;
}
+foreach i = 0-31 in {
+ def ENVREG#i : NVPTXReg<"%envreg"#i>;
+}
+
//===----------------------------------------------------------------------===//
// Register classes
//===----------------------------------------------------------------------===//
@@ -61,4 +65,5 @@ def Float32ArgRegs : NVPTXRegClass<[f32], 32, (add (sequence "fa%u", 0, 4))>;
def Float64ArgRegs : NVPTXRegClass<[f64], 64, (add (sequence "da%u", 0, 4))>;
// Read NVPTXRegisterInfo.cpp to see how VRFrame and VRDepot are used.
-def SpecialRegs : NVPTXRegClass<[i32], 32, (add VRFrame, VRDepot)>;
+def SpecialRegs : NVPTXRegClass<[i32], 32, (add VRFrame, VRDepot,
+ (sequence "ENVREG%u", 0, 31))>;
diff --git a/test/CodeGen/NVPTX/envreg.ll b/test/CodeGen/NVPTX/envreg.ll
new file mode 100644
index 0000000000..a341b49ecd
--- /dev/null
+++ b/test/CodeGen/NVPTX/envreg.ll
@@ -0,0 +1,139 @@
+; RUN: llc < %s -march=nvptx -mcpu=sm_20 | FileCheck %s
+
+
+declare i32 @llvm.nvvm.read.ptx.sreg.envreg0()
+declare i32 @llvm.nvvm.read.ptx.sreg.envreg1()
+declare i32 @llvm.nvvm.read.ptx.sreg.envreg2()
+declare i32 @llvm.nvvm.read.ptx.sreg.envreg3()
+declare i32 @llvm.nvvm.read.ptx.sreg.envreg4()
+declare i32 @llvm.nvvm.read.ptx.sreg.envreg5()
+declare i32 @llvm.nvvm.read.ptx.sreg.envreg6()
+declare i32 @llvm.nvvm.read.ptx.sreg.envreg7()
+declare i32 @llvm.nvvm.read.ptx.sreg.envreg8()
+declare i32 @llvm.nvvm.read.ptx.sreg.envreg9()
+declare i32 @llvm.nvvm.read.ptx.sreg.envreg10()
+declare i32 @llvm.nvvm.read.ptx.sreg.envreg11()
+declare i32 @llvm.nvvm.read.ptx.sreg.envreg12()
+declare i32 @llvm.nvvm.read.ptx.sreg.envreg13()
+declare i32 @llvm.nvvm.read.ptx.sreg.envreg14()
+declare i32 @llvm.nvvm.read.ptx.sreg.envreg15()
+declare i32 @llvm.nvvm.read.ptx.sreg.envreg16()
+declare i32 @llvm.nvvm.read.ptx.sreg.envreg17()
+declare i32 @llvm.nvvm.read.ptx.sreg.envreg18()
+declare i32 @llvm.nvvm.read.ptx.sreg.envreg19()
+declare i32 @llvm.nvvm.read.ptx.sreg.envreg20()
+declare i32 @llvm.nvvm.read.ptx.sreg.envreg21()
+declare i32 @llvm.nvvm.read.ptx.sreg.envreg22()
+declare i32 @llvm.nvvm.read.ptx.sreg.envreg23()
+declare i32 @llvm.nvvm.read.ptx.sreg.envreg24()
+declare i32 @llvm.nvvm.read.ptx.sreg.envreg25()
+declare i32 @llvm.nvvm.read.ptx.sreg.envreg26()
+declare i32 @llvm.nvvm.read.ptx.sreg.envreg27()
+declare i32 @llvm.nvvm.read.ptx.sreg.envreg28()
+declare i32 @llvm.nvvm.read.ptx.sreg.envreg29()
+declare i32 @llvm.nvvm.read.ptx.sreg.envreg30()
+declare i32 @llvm.nvvm.read.ptx.sreg.envreg31()
+
+
+; CHECK: foo
+define i32 @foo() {
+; CHECK: mov.b32 %r{{[0-9]+}}, %envreg0
+ %val0 = tail call i32 @llvm.nvvm.read.ptx.sreg.envreg0()
+; CHECK: mov.b32 %r{{[0-9]+}}, %envreg1
+ %val1 = tail call i32 @llvm.nvvm.read.ptx.sreg.envreg1()
+; CHECK: mov.b32 %r{{[0-9]+}}, %envreg2
+ %val2 = tail call i32 @llvm.nvvm.read.ptx.sreg.envreg2()
+; CHECK: mov.b32 %r{{[0-9]+}}, %envreg3
+ %val3 = tail call i32 @llvm.nvvm.read.ptx.sreg.envreg3()
+; CHECK: mov.b32 %r{{[0-9]+}}, %envreg4
+ %val4 = tail call i32 @llvm.nvvm.read.ptx.sreg.envreg4()
+; CHECK: mov.b32 %r{{[0-9]+}}, %envreg5
+ %val5 = tail call i32 @llvm.nvvm.read.ptx.sreg.envreg5()
+; CHECK: mov.b32 %r{{[0-9]+}}, %envreg6
+ %val6 = tail call i32 @llvm.nvvm.read.ptx.sreg.envreg6()
+; CHECK: mov.b32 %r{{[0-9]+}}, %envreg7
+ %val7 = tail call i32 @llvm.nvvm.read.ptx.sreg.envreg7()
+; CHECK: mov.b32 %r{{[0-9]+}}, %envreg8
+ %val8 = tail call i32 @llvm.nvvm.read.ptx.sreg.envreg8()
+; CHECK: mov.b32 %r{{[0-9]+}}, %envreg9
+ %val9 = tail call i32 @llvm.nvvm.read.ptx.sreg.envreg9()
+; CHECK: mov.b32 %r{{[0-9]+}}, %envreg10
+ %val10 = tail call i32 @llvm.nvvm.read.ptx.sreg.envreg10()
+; CHECK: mov.b32 %r{{[0-9]+}}, %envreg11
+ %val11 = tail call i32 @llvm.nvvm.read.ptx.sreg.envreg11()
+; CHECK: mov.b32 %r{{[0-9]+}}, %envreg12
+ %val12 = tail call i32 @llvm.nvvm.read.ptx.sreg.envreg12()
+; CHECK: mov.b32 %r{{[0-9]+}}, %envreg13
+ %val13 = tail call i32 @llvm.nvvm.read.ptx.sreg.envreg13()
+; CHECK: mov.b32 %r{{[0-9]+}}, %envreg14
+ %val14 = tail call i32 @llvm.nvvm.read.ptx.sreg.envreg14()
+; CHECK: mov.b32 %r{{[0-9]+}}, %envreg15
+ %val15 = tail call i32 @llvm.nvvm.read.ptx.sreg.envreg15()
+; CHECK: mov.b32 %r{{[0-9]+}}, %envreg16
+ %val16 = tail call i32 @llvm.nvvm.read.ptx.sreg.envreg16()
+; CHECK: mov.b32 %r{{[0-9]+}}, %envreg17
+ %val17 = tail call i32 @llvm.nvvm.read.ptx.sreg.envreg17()
+; CHECK: mov.b32 %r{{[0-9]+}}, %envreg18
+ %val18 = tail call i32 @llvm.nvvm.read.ptx.sreg.envreg18()
+; CHECK: mov.b32 %r{{[0-9]+}}, %envreg19
+ %val19 = tail call i32 @llvm.nvvm.read.ptx.sreg.envreg19()
+; CHECK: mov.b32 %r{{[0-9]+}}, %envreg20
+ %val20 = tail call i32 @llvm.nvvm.read.ptx.sreg.envreg20()
+; CHECK: mov.b32 %r{{[0-9]+}}, %envreg21
+ %val21 = tail call i32 @llvm.nvvm.read.ptx.sreg.envreg21()
+; CHECK: mov.b32 %r{{[0-9]+}}, %envreg22
+ %val22 = tail call i32 @llvm.nvvm.read.ptx.sreg.envreg22()
+; CHECK: mov.b32 %r{{[0-9]+}}, %envreg23
+ %val23 = tail call i32 @llvm.nvvm.read.ptx.sreg.envreg23()
+; CHECK: mov.b32 %r{{[0-9]+}}, %envreg24
+ %val24 = tail call i32 @llvm.nvvm.read.ptx.sreg.envreg24()
+; CHECK: mov.b32 %r{{[0-9]+}}, %envreg25
+ %val25 = tail call i32 @llvm.nvvm.read.ptx.sreg.envreg25()
+; CHECK: mov.b32 %r{{[0-9]+}}, %envreg26
+ %val26 = tail call i32 @llvm.nvvm.read.ptx.sreg.envreg26()
+; CHECK: mov.b32 %r{{[0-9]+}}, %envreg27
+ %val27 = tail call i32 @llvm.nvvm.read.ptx.sreg.envreg27()
+; CHECK: mov.b32 %r{{[0-9]+}}, %envreg28
+ %val28 = tail call i32 @llvm.nvvm.read.ptx.sreg.envreg28()
+; CHECK: mov.b32 %r{{[0-9]+}}, %envreg29
+ %val29 = tail call i32 @llvm.nvvm.read.ptx.sreg.envreg29()
+; CHECK: mov.b32 %r{{[0-9]+}}, %envreg30
+ %val30 = tail call i32 @llvm.nvvm.read.ptx.sreg.envreg30()
+; CHECK: mov.b32 %r{{[0-9]+}}, %envreg31
+ %val31 = tail call i32 @llvm.nvvm.read.ptx.sreg.envreg31()
+
+
+ %ret0 = add i32 %val0, %val1
+ %ret1 = add i32 %ret0, %val2
+ %ret2 = add i32 %ret1, %val3
+ %ret3 = add i32 %ret2, %val4
+ %ret4 = add i32 %ret3, %val5
+ %ret5 = add i32 %ret4, %val6
+ %ret6 = add i32 %ret5, %val7
+ %ret7 = add i32 %ret6, %val8
+ %ret8 = add i32 %ret7, %val9
+ %ret9 = add i32 %ret8, %val10
+ %ret10 = add i32 %ret9, %val11
+ %ret11 = add i32 %ret10, %val12
+ %ret12 = add i32 %ret11, %val13
+ %ret13 = add i32 %ret12, %val14
+ %ret14 = add i32 %ret13, %val15
+ %ret15 = add i32 %ret14, %val16
+ %ret16 = add i32 %ret15, %val17
+ %ret17 = add i32 %ret16, %val18
+ %ret18 = add i32 %ret17, %val19
+ %ret19 = add i32 %ret18, %val20
+ %ret20 = add i32 %ret19, %val21
+ %ret21 = add i32 %ret20, %val22
+ %ret22 = add i32 %ret21, %val23
+ %ret23 = add i32 %ret22, %val24
+ %ret24 = add i32 %ret23, %val25
+ %ret25 = add i32 %ret24, %val26
+ %ret26 = add i32 %ret25, %val27
+ %ret27 = add i32 %ret26, %val28
+ %ret28 = add i32 %ret27, %val29
+ %ret29 = add i32 %ret28, %val30
+ %ret30 = add i32 %ret29, %val31
+
+ ret i32 %ret30
+}