Index: lib/Target/AMDGPU/InstPrinter/AMDGPUInstPrinter.cpp
===================================================================
--- lib/Target/AMDGPU/InstPrinter/AMDGPUInstPrinter.cpp
+++ lib/Target/AMDGPU/InstPrinter/AMDGPUInstPrinter.cpp
@@ -491,7 +491,7 @@
     O << "-4.0";
   else if (Imm == 0x3fc45f306dc9c882 &&
            STI.getFeatureBits()[AMDGPU::FeatureInv2PiInlineImm])
-  O << "0.15915494";
+    O << "0.159154943091895317852646485335";
   else {
     assert(isUInt<32>(Imm) || Imm == 0x3fc45f306dc9c882);
 
Index: test/CodeGen/AMDGPU/imm.ll
===================================================================
--- test/CodeGen/AMDGPU/imm.ll
+++ test/CodeGen/AMDGPU/imm.ll
@@ -449,7 +449,7 @@
 ; SI: v_add_f64 v{{\[[0-9]+:[0-9]+\]}}, s{{\[[0-9]+:[0-9]+\]}}, v{{\[}}[[LO_VREG]]:[[HI_VREG]]{{\]}}
 
 ; VI: s_load_dwordx2 [[VAL:s\[[0-9]+:[0-9]+\]]], {{s\[[0-9]+:[0-9]+\]}}, 0x4c
-; VI: v_add_f64 [[REG:v\[[0-9]+:[0-9]+\]]], [[VAL]], 0.15915494{{$}}
+; VI: v_add_f64 [[REG:v\[[0-9]+:[0-9]+\]]], [[VAL]], 0.159154943091895317852646485335{{$}}
 ; VI: buffer_store_dwordx2 [[REG]]
 define amdgpu_kernel void @add_inline_imm_inv_2pi_f64(double addrspace(1)* %out, [8 x i32], double %x) {
   %y = fadd double %x, 0x3fc45f306dc9c882
Index: test/MC/AMDGPU/literals.s
===================================================================
--- test/MC/AMDGPU/literals.s
+++ test/MC/AMDGPU/literals.s
@@ -429,7 +429,7 @@
 v_trunc_f32_e32 v0, 0x3fc45f306dc9c882
 
 // NOSICI: error: invalid operand for instruction
-// VI: v_fract_f64_e32 v[0:1], 0.15915494 ; encoding: [0xf8,0x64,0x00,0x7e]
+// VI: v_fract_f64_e32 v[0:1], 0.159154943091895317852646485335 ; encoding: [0xf8,0x64,0x00,0x7e]
 v_fract_f64_e32 v[0:1], 0x3fc45f306dc9c882
 
 // SICI: v_trunc_f32_e32 v0, 0x3e22f983 ; encoding: [0xff,0x42,0x00,0x7e,0x83,0xf9,0x22,0x3e]
@@ -445,7 +445,7 @@
 v_trunc_f32_e64 v0, 0x3fc45f306dc9c882
 
 // NOSICI: error: invalid operand for instruction
-// VI: v_fract_f64_e64 v[0:1], 0.15915494 ; encoding: [0x00,0x00,0x72,0xd1,0xf8,0x00,0x00,0x00]
+// VI: v_fract_f64_e64 v[0:1], 0.159154943091895317852646485335 ; encoding: [0x00,0x00,0x72,0xd1,0xf8,0x00,0x00,0x00]
 v_fract_f64_e64 v[0:1], 0x3fc45f306dc9c882
 
 // NOSICI: error: invalid operand for instruction
@@ -457,7 +457,7 @@
 v_fract_f64_e64 v[0:1], 0x3e22f983
 
 // NOSICI: error: invalid operand for instruction
-// VI: s_mov_b64 s[0:1], 0.15915494 ; encoding: [0xf8,0x01,0x80,0xbe]
+// VI: s_mov_b64 s[0:1], 0.159154943091895317852646485335 ; encoding: [0xf8,0x01,0x80,0xbe]
 s_mov_b64_e32 s[0:1], 0.159154943091895317852646485335
 
 // SICI: v_and_b32_e32 v0, 0x3e22f983, v1 ; encoding: [0xff,0x02,0x00,0x36,0x83,0xf9,0x22,0x3e]
@@ -469,7 +469,7 @@
 v_and_b32_e64 v0, 0.159154943091895317852646485335, v1
 
 // SICI: v_fract_f64_e32 v[0:1], 0x3fc45f30 ; encoding: [0xff,0x7c,0x00,0x7e,0x30,0x5f,0xc4,0x3f]
-// VI: v_fract_f64_e32 v[0:1], 0.15915494 ; encoding: [0xf8,0x64,0x00,0x7e]
+// VI: v_fract_f64_e32 v[0:1], 0.159154943091895317852646485335 ; encoding: [0xf8,0x64,0x00,0x7e]
 v_fract_f64 v[0:1], 0.159154943091895317852646485335
 
 // SICI: v_trunc_f32_e32 v0, 0x3e22f983 ; encoding: [0xff,0x42,0x00,0x7e,0x83,0xf9,0x22,0x3e]
Index: test/MC/Disassembler/AMDGPU/literal_vi.txt
===================================================================
--- /dev/null
+++ test/MC/Disassembler/AMDGPU/literal_vi.txt
@@ -0,0 +1,7 @@
+# RUN: llvm-mc -arch=amdgcn -mcpu=tonga -disassemble -show-encoding %s | FileCheck -check-prefix=VI %s
+
+# VI: v_fract_f64_e32 v[0:1], 0.159154943091895317852646485335 ; encoding: [0xf8,0x64,0x00,0x7e]
+0xf8,0x64,0x00,0x7e
+
+# VI: v_trunc_f32_e32 v0, 0.15915494 ; encoding: [0xf8,0x38,0x00,0x7e]
+0xf8,0x38,0x00,0x7e